I need NCERT Solution for Class 9 Science Important of 9 Science with Class Ninth
Science and Class 9 Science Solutions for terminal Exam along with Important
Questions 2022-2023 class 9 Science and Multiple Objective Questions with answers.
Class Ninth Science MCQ with explanation for first and 2nd term exams
What is meant by pulse?
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A wave of short duration confined to a small portion of a medium at any given time is called a pulse.